Evaluate
16\left(c+d\right)^{2}
Expand
16c^{2}+32cd+16d^{2}
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16c^{2}+32cd+16d^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(4c+4d\right)^{2}.
16c^{2}+32cd+16d^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(4c+4d\right)^{2}.
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